Multiple totalizer



Feb. 28, 1967 R. M. WILSON 3,366,536

MULTIPLE TOTALI ZER Filed July 20, 1965 5 Sheets-Sheet 1 FIG; 1

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Hiii Feb. 28, M L N MULTIPLE TOTALIZER Filed July 20, 1965 Feb. 28, 1967R. M. WILSON 3,306,536

MULTIPLE TOTALIZER Filed July 20, .1965 5 Sheets-Sheet 5 NVENLIOR. IM156;

Feb. 28, 1967 R. M. WILSON MULTIPLE TOTALIZER 5 Sheets-Sheet 4 FiledJuly 20, 1965 30 FIG INVEN OR. la 1214 119011,

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United States Patent Office William M. Pa., a corporation of Thisinvention relates to a multiple totalizer and, in particular, to a meansfor recording the operation or output of a machine by any one of anumber of operators on separate counters associated with particularoperators.

The apparatus of .this invention is capable of counting or recording theoutput of any machine whether that output is in the form of separateunits or a quantity flow. For example, this apparatus can record thenumber of articles produced by a particular industrial operator workingon a punch press or it can be used to record the number of gallons offuel pumped by a service station attendant.

It is the primary advantage of the apparatus of this invention that anoperator cannot turn on nor operate the machine without first engaginghis separate counter which is generally accomplished by simply insertingand rotating his key in the lock assigned to him. Further, that as soonas one separate counter is engaged, no other counter can be engaged andthat the machine is automatically turned off before the first operatorscounter disengages and his key is removed.

It is another advantage of this invention that a master lock cylinder isprovided :so neither the totalizer nor the machine can be operated byany of the individual counter locks until the master lock is placed inthe unlocked or operating condition.

It is a further advantage of this invention that a minimum load isplaced upon the key by the actuating components of the totalizer andthat the apparatus is inexpensive to construct and maintain and simpleto operate. These and other advantages of this invention will becomemore apparent from the description contained hereinbelow and from thedrawings attached hereto, wherein:

FIG. 1 shows, in front elevation, a totalizer conveniently embodying myinvention in one form.

FIG. 2 is a rear view of the totalizer with the greater portion of therear wall of its housing broken out to expose the mechanism at theinterior with all of the parts of the mechanism in their normalpositions.

FIG. 3 is a view similar to FIG. 2 with one of the lockactuated units ofthe mechanism in the partially operated position.

' FIG. 4 is a transverse sectional view taken as indicated by the angledarrows IV-IV in FIG. 3.

FIG. 5 is a fragmentary View in section taken as indicated by the angledarrows VV in FIG. 4.

FIG. 6 is an exploded view in perspective of one of the lock actuatedunits of the mechanism.

' FIG. 7 is a fragmentary detail view in section taken as indicated bythe angled arrows VIIVII in FIG. 6; and

' FIG. 8 is a View similar to FIG. 3 showing an alternative embodimentof my invention in the complete operating condition.

' Although this invention is shown and described with reference toparticular forms and arrangements in combination for recordingintermittent movement of an electrically controlled machine, it shouldbe understood that these are only the preferred forms and that otherarrangements are readily possible.

Referring preliminarily to FIG. 3 of the drawing (showing anintermediate operative stage), this form of the 3,306,536 Patented Feb.28, 1967 totalizer of this invention has an outside, generally squaresupporting frame 10 to which the cut away back panel 11 and front panel13 are attached. Panel 11 supports a generally rectangular lock bar 20for limited lengthwise, or vertical movement as the totalizer ispositioned, by means of a stud or cam 21 being mounted in a slot 12 inpanel 11. Lock bar 20 is also supported by a pair of flanking, elongatedparallel flange supports 24 attached to the inside surface of back panel11 as shown in FIG. 4. Lock bar 20 has two lengthwise or vertical rowsof generally inverted L-shaped slots 22 formed therein, each slotconsisting of a long, lengthwise segment 22a and a short transversesegment 22]). The function of lock bar 20 is described further below.Located behind lock bar 20, as shown in FIG. 3, are two vertical rows oflatch bars 30 having U-shaped cross-sections, each bar being mounted forlengthwise or horizontal movement which is transverse to lock bar 20.Each latch bar 30- is supported for movement on its side flanges 31(FIGS. 4 and 5) sliding within a pair of recesses 42a formed in anL-shaped flange support 42 which is fixedly attached to the front panel13 as shown especially in FIG. 4. Located behind the latch bars as shownin FIG. 3 are two rows of vertically arranged, separate counters 40,each fixedly supported in the frame 10 and each having a counting shaft41 extending through a flange support 42 at one end and frame 14 at thedistal end. An input shaft 50, connected externally to a source ofrotary motion or directly to the machine whose output is to be recorded,extends downwardly through the frame 10 at the top and drives atransverse shaft 51 by means of a pair of meshed bevel gears 53, 54.Shaft 51, by means of bevel gears 55 and 56, located on the left side oflock bar 20 as shown in FIG. 3, drives the left secondary input shaft59a and bevel gear 57, meshed with bevel gear 54, drives the rightsecondary input shaft 50b. As disclosed in greater detail below, thelatch bars 30 control the engagement of the individual counters 40 Withthe secondary input shafts 50a, 50b and lock bar 20 has a separatefunction of preventing more than one counter from being engaged at anytime.

Referring now to FIG. 4, a pair of lock cylinders 60 are shown mountedin holes within the frame 10 each to receive a key inserted in .thedirection from the front panel 13 toward the back panel 11. Lockcylinders 60 shown in FIG. 4 are part of two vertical rows of lockcylinders indicated in dotted lines in FIG. 3. Each lock cylinder 60 isheld within the frame 10 by locking nut 61 and each has tumblers set toreceive only a particular cut key which is given to a particularoperator. Each lock cylinder has a stud or cam 62 which extends in anaxial direction from the back surface of the lock cylinder from alocation adjacent the periphery of the cylinder.

Each latch bar 30 as shown in FIGS. 4 and 5 has an inwardly directed lip32 which is either in contact with or laterally displaced from the frontsurface of a bevel gear 43. Each latch bar also has a generallyarcuately shaped slot 34 extending transverse to bar 30 with an enlargedportion 34a as shown in FIG. 6 and each bar 30 is supported at the endopposite its counter by its adjacent lock cylinder 60.

Referring now also to FIG. 7, the inwardly directed end of each countershaft 41 is equipped with a bevel gear 43 rected lip 32 of itsassociated latch bar 30. The components shown in FIG. 6 control theoperation of one counter.

Front panel 13 (FIG. 1) is provided with a pair of elongated openings14, 15 behind which are located a transparent material 16 and a paper 17(FIG. 6) giving the name or number of the lock or operator for thiscounter. The numbers of the counter 40 are visible through opening 14.The counter 40 has a series of counting wheels (not shown) which are somounted on shaft '41 and connected to each other that they count therotations of shaft 41 and record the count on numbered dials. Counterssimilar to the ones shown and described herein are well known in theart.

It should be understood, as shown in FIG. 4, that the stud or cam 62 ofeach lock cylinder 60 extends through, first the arcuate slot 34 oflatch bar 30 and then through the L-shaped slot 22 of the lock barthereby moving both bars as the stud or cam and the lock cylinder rotatethrough approximately one-half revolution.

FIG. 8 presents a diagrammatic view of an alternative form of theinvention connected with an electric current Which powers the machinedirectly controlled by an operator. In describing the apparatus shown inthis figure, largely'the same reference numerals have been used as withthe apparatus of FIGS. l-7 so that similar parts are more easilyrecognized and different numbers are used with those parts to whichparticular reference is made.

In the FIG. 8 apparatus, four lock cylinders 60 are mounted one aboveanother in a row and a master lock cylinder 80 is located beneath theothers. Master lock cylinder 80 is similar to cylinders 60 except thatit has no latch bar associated with it and its stud or cam 82 orbits ina rectangular slot 84 for the reason described below.

A single input shaft 50x is mounted for rotation around a vertical axisand four bevel gears 58 are fixedly mounted on shaft 50x at levelsopposite to the four bevel gears 43 mounted on separate counter shaft41. Three of the four counter gears 43 are held in the disengagedposition by their respective latch bars 30 but one gear 43a is meshedwith a gear 53a as its latch bar 30a is positioned to the right of itsinitial position. The counter 40a shows the count 123 on its dials.

As described in connection with the partially operated structure of FIG.3, lock bar 20 is supported for limited vertical movement and each ofthe latch bars 30 is supported for limited horizontal movement.

A machine whose output is to be counted or recorded by the separatecounters 40 is indicated generally by the numeral 108 and, as indicatedabove, this machine may be any kind of apparatus whose motion or outputcan be measured. An ordinary operator-controlled normally open switch109 is included in the general circuit shown. A source of power isindicated by the numeral 107 and a conducting wire 112 carries thecurrent from the source 107 to a reciprocating apparatus 91 whichincludes a solenoid 95, a pawl 97 and a ratchet 98 which is mounted onshaft 50x. A spring 96 continually presses pawl 97 into engagement withratchet 98 and spring 101 withdraws pawl 97 when solenoid 95 isdeenergized. The pawl 97 is pivoted at one end of a link 94 which isconnected to an arm 99 fulcrumed on a fixed pivot 100, said arm beingsubject t-o-a spring 101 and operable by means of a solenoid 95. Ifcurrent continuously flows through the circuit When the machine isoperated, then apparatus 91 would be equipped with a circuit breaker 110so that intermittent action of pawl 97 is realized, as further describedbelow. Conducting wires 104 and 105 complete the circuit which includesa lock bar switch 102 which consists of a movable contact 103 and astationary contact 120. When lock bar 20 is raised to the full operatingposition, as shown in FIG. 8, it presses contact 103 against contact 120completing the circuit and allowing the machine 108 to be operated whenthe operator closes the control switch 109. It is understood that if oneclosing of the switch 109 causes the machine to cycle once, thusproducing an increment of one in the connected totalizer, circuitbreaker 110 would not be required. If the machine is of the type thatcycles continuously as long as start switch 109 remains in the closedposition, then circuit breaker 110 will become operative to produce anincrement of one in the connected totalizer for each cycle of themachine. The circuit breaker 110 is in the form of an eccentric cam on ashaft of the device 10 8 and serves to intermittently close switch 111in a secondary circuit 112, 113 in which the solenoid 95 is included.Accordingly, during each rotation of the shaft of the device 108 theswitch 111 is closed with resultant intermittent energization of thesolenoid 95 in the secondary circuit and intermittent picking of theratchet wheel 98 by the pawl 97 to cause actuation of the counter 40acoupled as above to the shaft 50x.

Operation of the preferred form of the apparatus of this invention issubstantially as follows. For simplicity, the apparatus of FIG. 8 willbe referred to but it should be understood that the apparatus fullydisclosed in FIG. 3 operates in the same manner.

As indicated above, the master lock cylinder renders the deviceinoperable to any of the keyholders when the master lock stud is rotatedto position 82a. This will prevent the lock bar 20 from being raised andmake it impossible to turn any of the subsidiary lock cylinders 60; thusthe device cannot be started. The key to master lock cylinder isarranged so that it can be removed when the cylinder is in either thelocked or clear position; thus the supervisor can lock the machine andremove his key. The individual look cylinders 60 are so arranged thatthe key can only be removed when the cylinder is in the lockedcondition. Therefore, it will be seen that the operator cannot removehis key until he has locked the machine, disconnecting his totalizer.

The totalizer can now be operated by an individual operator who has akey which will operate one of the lock cylinders 60. It will be notedthat FIGURE 6 is taken from the rear of the device, inaccessible to theoperator. Therefore, when reference is made to the operator turning hiskey clockwise, the rotation of the lock cylinder in this view willappear counter-clockwise. After the operator inserts his key in cylinder60a and begins to turn the key clockwise, stud 62a of the third lockcylinder from the bottom will immediately engage the far side of thearcuate slot 34 formed in the latch bar 30a causing the said bar toadvance to the right as shown in FIG. 5. Movement of the latch bar 30ato the right allows bevel gear 43a to engage bevel gear 58a on the inputshaft 52.

Due to the configuration of the slot, complete movement of the latch barand engagement of the gears will be completed during approximately thefirst 22 /2 of movement of the stud or calm. During this are ofmovement, the lock bar will have been raised very little. Furthermovement of the lock cylinder, while effecting no further movement ofthe latch bar, will raise the lock bar 20 closing switch 102 completingthe circuit which allows operation of machine 108. It should be notedthat when the lock bar 20 has been raised by rotation of one lookcylinder, the stud or cam on the end of all the other lock cylinders isembraced by the longitudinal portion of the L-shaped slots in the lockbar preventing their turning and thereby preventing the engagement ofany other totalizer.

When one operator has completed his shift or decides to close themachine, he rotates his key counter-clockwise as shown in FIG. 6 so thatstud 62a first lowers lock bar 20 breaking the circuit at switch 102preventing further operation of the machine. Further movement of thelock cylinder causes the stud 62a to move latch bar 30a to the leftthereby disengaging bevel gear 43a from bevel gear 58a against thespring 46a. In this condition, the machine cannot be operated by manualswitch 109* until a second operator causes his counter to be connectedto the input shaft 50x. When none of the separate counters are engaged,the master lock can then lock the totalizer and machine againstunauthorized use by causing stud 82 to assume position 82a therebypreventing movement of the lock bar 20 and consequently preventingrotation of any of the other lock cylinders, unlocking of the machine orconnecting of any of the totalizers.

It should be understood that while FIG. 8 shows the movement of the lockbar 20' directly actuating switch 102, exactly the same purpose would beachieved if simple mechanical linkage permitted the actuation of orpermitted operative access to switch 109. Similarly, in the form shownin FIGS. 3 and 4, the movement of the lock bar 20 could, by simplemechanical linkage, unlatch and permit the operation of a manuallyoperated machine the cycling of which would be transmitted to inputshaft 50 and thus recorded on the appropriate totalizer.

It should be understood that the totalizer of this invention can quiteeasily be adapted for recording the discharge or pumping of liquid. Assuch, input shaft 50x may be connected to and driven by the pump metershaft as the reciprocating apparatus shown is not necessary. Of course,the apparatus of this invention can be mounted and operated in anattitude different than that shown and certain parts can be changed tomodify the operation without limiting its operation.

Although this invention has been described with reference to specificforms and embodiments thereof, it will be apparent to those skilled inthe art that various changes other than those referred to above may bemade in the form of the apparatus, that equivalent elements may besubstituted for those illustrated in the drawings, that parts may bereversed, and that certain features of the invention may be used toadvantage independently of the use of other features, all within thespirit and scope of the invention as defined in the appended claims.

I claim:

1. A multiple totalizer for recording the output of a machine by any oneof a number of operators on separate counters, said totalizer comprising'a plurality of counters each having a driving shaft and each associatedwith a particular operator,

"a count input shaft connected to the machine Whose operation is to berecorded, said shaft being rotated when the machine is operated,

a plurality of lock cylinders mounted in a row with their axessubstantially parallel to each other, each cylinder having a cam or studextending axially from the end surface at a location proximate theperimeter of said surface, each lock cylinder adapted to receive only akey of a particular conformation, v

a lock bar extending transverse to the axes of the lock cylindersandlocat ed abutting the end surface of each cylinder, said bar having aseries of substantially L-shaped slots formed therein, each slot beinglocated substantially opposite the end surface of a lock cylinder toreceive the cam or stud of a cylinder therein,

the lock bar being mounted for limited movement lengthwise,

latch "bars for all counters mounted substantially parallel to eachother and transverse to the lock bar for limtied movement lengthwise,one end of each latch bar having a slot formed to receive the stud orcam of a lock cylinder therein, each latch bar being detachably incontact with the driving gear of a counter to engage and disengage thecounter shaft with the input shaft when the latch bar is movedlengthwise whereby rotation of a selected cylinder and its cam or studmoves the lock bar lengthwise, thereby preventing rotation of any otherlock cylinder cam or stud, and moves the associated latch bar lengthwiseto engage the related counter shaft with the input shaft so thatoperation of the machine is rerecorded on said individual counter, and

an electrical circuit controlling operation of the machine 6 whoseoperation is to be recorded, an electrical switch connected within theelectrical circuit controlling operation of the machine, said switchbeing normally open when the lock bar is in its initial position andsaid lock bar closing the switch by operative contact therewith tocomplete the circuit when moved lengthwise by the cam or stud of aparticular lock cylinder.

2. The totalizer as defined in claim 1 wherein the cam or stud of eachlock cylinder is positioned at the junction of the two segments of theL-shaped slot when that lock cylinder is in its initial position, saidcam or stud upon rotation pressing against the side of the short segmentof the L-shaped slot to move the lock bar lengthwise and also pressesagainst the side of the slot of the associated latch bar to move saidbar lengthwise and transverse to the lock bar.

3. The totalizer as defined in claim 2 wherein the long segment of theL-shaped slot extends lengthwise in the lock bar and the slot extendssubstantially transverse in the latch bar so that when the cam or studof a particular lock cylinder rotates, the cam or stud passes along thetransverse segment of the L-shaped slot while moving the lock barlengthwise and passes along the slot in the latch 'bar while moving itlengthwise but transverse to the lock bar. 7

4. The totalizer as defined in claim 3 further including means forallowing lengthwise movement but preventing transverse movement of thelock bar so that when the bar is moved lengthwise by the cam or stud ofone lock cylinder, the cams or studs of the remaining lock cylinderspass within the longitudinal segments of the L- shaped slots therebypreventing subsequent rotation of said lock cylinders.

5 The totalizer as defined in claim 4 further including each counterdriving shaft being mounted substantially parallel to each other andtransverseto the input shaft, each counter shaft having a bevel gearmounted for limited axial movement thereon but for rotation with theshaft, spring means for urging the bevel geartoward theinput shaft, theinput shaft having a bevel gear for each counter shaft gear located onsaid input shaft proximate thereto, and

each latch bar being in contact with a counter shaft gear to hold saidgear away from the bevel gear against the spring means when said latchbar is in the initial position and so disposed that when the latch baris moved lengthwise, the spring means presses the bevel gear axially toengage the gear mounted on the input shaft. 6. The totalizer as definedin claim 5 further including a master lock cylinder mounted in a rowwith and having its axis parallel to the lock cylinders, said mastercylinder having a cam or stud extending axially from its end surface ata location proximate the perimeter of said surface, a lock bar proximatethe master cylinders end surface, said lock bar having a substantiallyrectangular slot located substantially opposite the end surface of saidmaster cylinder whereby, upon rotation of the master cylinder, the lockbar is prevented from being moved into its operative position.

7. The totalizer as defined in claim 6 further including meansassociated with the master lock cylinder for preventing the stud or camof said cylinder from moving the lock bar into its operative position.

8. A multiple totalizer for recording the operation of a machine by anyone of a number of operators on his individual counter, said totalizercomprising a plurality of individual counters mounted in two or morerows one counter above the other, each counter having a driving shaftextending parallel to the other shafts,

an input shaft for each row of counters, extending transverse to theindividual counter shafts, a cross shaft connected to each input shaftby bevel gears a lock bar extending transverse to the axes of the lockcylinders, said bar having two or more rows of substantially L-shapedslots formed therein, one segment of the slot being lengthwise and onesegment being transverse to the bar, each slot being locatedsubstantially opposite the end surface of a lock cylinder to receive thecam or stud of a lock cylinder therein, the lock bar being mounted forlimited longitudinal movement,

an electrical circuit connecting the machine and a power source, saidcircuit having an operator switch and a lock bar switch, said lock barswitch being located adjacent the look bar whereby the switch remainsopen when the lock bar is in its initial position and the switch isclosed when the lock bar is moved lengthwise into its operativeposition, and latch bar for each counter mounted one above the other intwo or more rows for limited movement transverse to the lock bar, oneend of each latch bar abutting the lock bar having a slot formed toreceive the cam or stud of a lock cylinder therein, each latch bar beingdetachably in contact with the driving shaft of an individual counter toengage and disengage the counter shaft with an input shaft when said baris moved lengthwise whereby after insertion of an operating key in aparticular lock cylinder, the lock cylinder is rotated causing the camor stud to move the lock bar upward, thereby preventing rotation of anyother lock cylinder stud and closing the lock bar switch to complete themachine operating circuit, and said lock cylinder cam or stud moves theassociated latch bar lengthwise to engage its individual counter shaftwith an input shaft so that operation of the machine is recorded on saidindividual counter.

The totalizer as defined in claim 8 wherein the cam or stud of each lockcylinder is positioned at the junction of the two segments of theL-shaped slot when that lock cylinder is in its initial stud uponrotation position, said cam or pressing against the transverse side ofone segment of the L-shaped slot to raise the lock bar and pressingagainst the side of the slot of the latch bar to move said bar bar.

lengthwise and transverse the lock 10. The device as defined in claim 8wherein the means for rotating the input shaft when the machine isoperated comprises a solenoid and a pawl and ratchet advance mechanism,said solenoid connected within the machine operating circuit comprisingadditionally the power source, the machine, the machine operating switchand the lock bar switch with the ratchet mounted on the input shaft sothat when the circuit is completed by the lock bar closing the lock barswitch to permit operation of the machine and the machine operatingswitch closed to cycle the machine, the solenoid energizes causing thepawl to advance the ratchet thereby rotating the input shaft andadvancing the connected counter one count.

11. The device as defined in claim 10, wherein the machine operatingcircuit comprises additionally a circuit breaking device causing thesolenoid and its associated ratchet to be energized once for each cycleof the machine.

7 12. A totalizer comprising a housing; a plurality of counters withinthe housing readable through windows in the front of the housing; ashaft within the housing; slides within the housing operable by lockswith different keys to bring drive normally-retracted wheels individualto the counters into engagement with corresponding drive wheels on theshaft; a restraining means automatically actuated upon actuation of oneof the slides to prevent actuation of all of the remaining slides; aratchet wheel affixed to said shaft; a pawl adapted to pick saidratchet; a solenoid for actuating the pawl; a normally open switchwithin the housing arranged to be closed upon actuation of therestraining means as aforesaid; an electric circuit in which a machineor apparatus of which the output is 35 to be recorded is interposedtogether with said solenoid and said switch; and a make and break switchactuated by the machine or apparatus to close the circuit for excitationof the solenoid and picking of the ratchet wheel by the pawl to rotatethe aforesaid shaft.

13. A totalizer, in accordance with claim 12, wherein amanually-operable switch is interposed in the circuit for starting themachine or apparatus of which the output is to be recorded.

References Cited by the Examiner UNITED STATES PATENTS 1,048,041 12/1912Cole 23s-91 1,439,904 12/1922 Lockwood 235-91 1,593,637 7/1926 Miller235 91 1,616,028 2/1927 Cooney 235- 912 2,103,650 12/1937 Spaunburg235-91 3,141,611 7/1964 Ambrozaitis 235-91 RICHARD B. WILKINSON, PrimaryExaminer. TERRY J. ANDERSON, Assistant Examiner.

8. A MULTIPLE TOTALIZER FOR RECORDING THE OPERATION OF A MACHINE BY ANYONE OF A NUMBER OF OPERATORS ON HIS INDIVIDUAL COUNTER, SAID TOTALIZERCOMPRISING A PLURALITY OF INDIVIDUAL COUNTERS MOUNTED IN TWO OR MOREROWS ONE COUNTER ABOVE THE OTHER, EACH COUNTER HAVING A DRIVING SHAFTEXTENDING PARALLEL TO THE OTHER SHAFTS, AN INPUT SHAFT FOR EACH ROW OFCOUNTERS, EXTENDING TRANSVERSE TO THE INDIVIDUAL COUNTER SHAFTS, A CROSSSHAFT CONNECTED TO EACH INPUT SHAFT BY BEVEL GEARS SO THAT EACH SHAFTAND THE CROSS SHAFTS REVOLVE IN UNISON, ONE OF SUCH SHAFTS BEINGCONNECTED TO THE MACHINE WHOSE OPERATION IS TO BE RECORDED, SAID SHAFTBEING ROTATED WHEN THE MACHINE IS OPERATED. A PLURALITY OF LOCKCYLINDERS MOUNTED ONE CYLINDER ABOVE THE OTHER WITH THEIR AXESSUBSTANTIALLY PARALLEL IN TWO OR MORE ROWS, EACH LOCK CYLINDER BEINGASSOCIATED WITH A PARTICULAR COUNTER AND OPERATED BY ONLY A KEY OF APARTICULAR CONFORMATION, EACH LOCK CYLINDER HAVING A CAM OR STUDEXTENDING AXIALLY FROM THE END SURFACE AT A LOCATION PROXIMATE THEPERIMETER OF SAID SURFACE, A LOCK BAR EXTENDING TRANSVERSE TO THE AXESOF THE LOCK CYLINDERS, SAID BAR HAVING TWO OR MORE ROWS OF SUBSTANTIALLYL-SHAPED SLOTS FORMED THEREIN, ONE SEGMENT OF THE SLOT BEING LENGTHWISEAND ONE SEGMENT BEING TRANSVERSE TO THE BAR, EACH SLOT BEING LOCATEDSUBSTANTIALLY OPPOSITE THE END SURFACE OF A LOCK CYLINDER TO RECEIVE THECAM OR STUD OF A LOCK CYLINDER THEREIN, THE LOCK BAR BEING MOUNTED FORLIMITED LONGITUDINAL MOVEMENT, AN ELECTRICAL CIRCUIT CONNECTING THEMACHINE AND A POWER SOURCE, SAID CIRCUIT HAVING AN OPERATOR SWITCH AND ALOCK BAR SWITCH, SAID LOCK BAR SWITCH BEING LOCATED ADJACENT THE LOCKBAR WHEREBY THE SWITCH REMAINS OPEN WHEN THE LOCK BAR IS IN ITS INITIALPOSITION AND THE SWITCH IS CLOSED WHEN THE LOCK BAR IS MOVED LENGTHWISEINTO ITS OPERATIVE POSITION, AND A LATCH BAR FOR EACH COUNTER MOUNTEDONE ABOVE THE OTHER IN TWO OR MORE ROWS FOR LIMITED MOVEMENT TRANSVERSETO THE LOCK BAR, ONE END OF EACH LATCH BAR ABUTTING THE LOCK BAR HAVINGA SLOT FORMED TO RECEIVE THE CAM OR STUD OF A LOCK CYLINDER THEREIN,EACH LATCH BAR BEING DETACHABLY IN CONTACT WITH THE DRIVING SHAFT OF ANINDIVIDUAL COUNTER TO ENGAGE AND DISENGAGE THE COUNTER SHAFT WITH ANINPUT SHAFT WHEN SAID BAR IS MOVED LENGTHWISE WHEREBY AFTER INSERTION OFAN OPERATING KEY IN A PARTICULAR LOCK CYLINDER, THE LOCK CYLINDER ISROTATED CAUSING THE CAM OR STUD TO MOVE THE LOCK BAR UPWARD, THEREBYPREVENTING ROTATION OF ANY OTHER LOCK CYLINDER STUD AND CLOSING THE LOCKBAR SWITCH TO COMPLETE THE MACHINE OPERATING CIRCUIT, AND SAID LOCKCYLINDER CAM OR STUD MOVES THE ASSOCIATED LATCH BAR LENGTHWISE TO ENGAGEITS INDIVIDUAL COUNTER SHAFT WITH AN INPUT SHAFT SO THAT OPERATION OFTHE MACHINE IS RECORDED ON SAID INDIVIDUAL COUNTER.